190124861 has 8 divisors (see below), whose sum is σ = 193495800. Its totient is φ = 186762240.

The previous prime is 190124843. The next prime is 190124929. The reversal of 190124861 is 168421091.

It can be written as a sum of positive squares in 4 ways, for example, as 10725625 + 179399236 = 3275^2 + 13394^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190124861 - 2²² = 185930557 is a prime.

It is a super-2 number, since 2×190124861² = 72294925540538642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190121861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60005 + ... + 63093.

It is an arithmetic number, because the mean of its divisors is an integer number (24186975).

Almost surely, 2^190124861 is an apocalyptic number.

It is an amenable number.

190124861 is a deficient number, since it is larger than the sum of its proper divisors (3370939).

190124861 is a wasteful number, since it uses less digits than its factorization.

190124861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 190124861 is about 13788.5771927346. The cubic root of 190124861 is about 575.0156124305.

It can be divided in two parts, 1901 and 24861, that added together give a palindrome (26762).

The spelling of 190124861 in words is "one hundred ninety million, one hundred twenty-four thousand, eight hundred sixty-one".